Abstract
During the past year, work on x-ray emission in heavy-ion collisions has concentrated on the following topics: environmental influences on the K..cap alpha.. x-ray spectra of 65-MeV sulfur ions traveling in solids; multiplet structure of few-electron sulfur ions; multiplet structure of Mg K..cap alpha.. x-ray satellites; polarization of 1s2p..-->..1s/sup 2/ transitions in He-like sulfur ions; and interatomic electron transfer in ionic fluorine compounds following 1s2p vacancy production. Among the most significant accomplishments of the program was a study of the dependence of dynamic screening energy shifts on electron density. It was found that the shifts measured for the 2/sup 1/P..-->..1/sup 1/S and 2/sup 2/P..-->..1/sup 2/S x-ray transitions of He- and H-like sulfur ions (respectively) were in remarkably good agreement with theoretical expectations. Another interesting discovery evolved from measurements of fluorine K..cap alpha.. x-ray spectra for the alkali metal and alkaline earth fluorides using 5.5-MeV He/sup +/ ions. The systematics of these spectra provide the first evidence for direct electron transfer between inner levels of neighboring atoms in a solid. 10 figures, 3 tables. (RWR)
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